Trolley-pole base



Dec. 30, 1930. E. D. MooRE v J1,787,012

TROLLEY POLE BASE Filed Sept. 16, 1929 lA/@M Y Inventor Attorney Patented Dec. 30, 1930 .UNITED STATES PATENT OFFICE EDGAR ID. MOORE, OF MANSFIELD, OHIO, ASSIGTORl TO THE OHIO BRASS COMPANY, OF-

MANVSFIELD, OHIO, A CORPORATION OF NEWT` JERSEY TROLLEY-POLE BASE Application. filed September 16, w29.v Serial No. 392,767.

l My .invention relates to improvements in (Ionnection with trolley poles andibases there- Or. i

The object of my invention is to perfect 6 the'v contact relation betweenY the trolley pole and the-trolley base as current must flow from the .trolley pole to the base and thence to the apparatus upon a car and therefore all joints in connection should be as efficient as possible. A y a Y The trolley base and pole are mounted upon the roof of the car and are exposed to all ykinds of ,weather and are formed, as a rule, of iron which is subject to corrosion and very '15 often it is necessary to change trolley poles on a run and this is usually done by the car y,crew who are more or less rushed and take very little care ork precaution to see that the lcontacting parts are fr ee of rustor corrosion.

Iy have provided means for; practically eliminating the question'V of corrosion, or at Vleast have reduced it to a very small amount as compared with that to be found on poles andl bases today. Further,A the contact between non-ferrous metals such as copper is `,much better than that between two pieces of ferrous metal. Y

My invention resides in the new and novel constructiom combination and relationof the various parts and in the various steps used y in the process described in the specification and shown in the drawing.

In the drawing :p y Fig. '1 is a side view in elevation of a trolley base and pole with my improvement in* corporated therein. y ,i Fig. 2 is ka face view of one of the clamp ing' members as shown in Fig. 1. Fig. 3 is an end view ofFig. 2. Fig. 4 is a sectional view on the line 4 4 of Fig. 1. 'Y Y Fig. 5 isa trolley pole having incorporated 'therewith my advance in the art.

Figj illustrates the method of applying my invention to the endvof a trolley pole. In the preferred embodiment of my invention I employ a trolley base provided with a Ystationary base'member 1, a turret member 502 mountedr upon thebase to rotate about the vertical axis -w. Pivotally mounted tothe turret is an arm 3 movable in a vertical plane about its pivotal point 4 andY biased to have its free end moved upwardlyby means of the spring or springs 5 secured to the arm and turret. f

The-arm 3 is usually n provided with a groove 6 shown in Fig. 4 in which the trolley pole 7 is positioned and the pole isheld in position by means of the clamping members 8 secured to the arm by. means of the bolts and nuts 9. v

Interposed between the arm 3 and the pole 7 is a coating 10 which is applied to the pole 7 at the end thereof and adheres tothe sur'- face of the pole, forming a iixed relation therewith, asis the case with an alloyed union or what might be termed a sprayed union, as when'a coating ofvmetal is sprayed upon another metal surface.

The surface of the cl-amps 8 which contactwith the pole may also be provided with a coating 11 and likewise the surface of the groove 6 may be provided with a coating 12.

It is quite evident that the coating might rest upon the pole and either or both parts 3 and 8 and also it is evident that the coatings 10 shown in Fig. 1 may be made continuous as shown by the coating 13 in Fig. 5.

The coating may consist of various nonferrous metals, the conductivity and non-corrosive properties being much greater than those o-f iron. The non-ferrous coating may consist of Zinc or a brazing sp'elter such as an alloy of copper and zinc, or it may consist of pure copper. Alsoothermetals may be used of a non-corrosive character in the coating, such. as Monel, chromium and stainless steel, but these. latter metals have a low conductivity and therefore do not meet one requirement, namely conductivity.

The zinc coating may be applied, as is the common practice, `with galvanizing or tin may be substituted for the. Zinc and such coating'wouldy have what might be termed an alloyed union with the base metal if the coating is properly applied, but such coating Vwould have at least a very tenacious hold l lofi hering union with the parts upon whichit isr sprayed. The non-corrosive metals, Monel and Vstainless steel, may also be applied by the metal spray process but the chromium would probably be applied by the: electro plating process.

`While I have referred to Zinc', brazing spelter, copper and tin as non-corroding metals, I do not use this term as absolute because such metals will corrode or oxidize slightly but such corrosion consists of a very thin and delicate film as an oxide, which is very easily broken through when two parts are brought into strongA Contact.

In Fig. 6 I have indicated a` method of spraying the metal coating upon the end of a trolley pole and show at 14 a spray gun which is used to considerable extent at the present day and Vis so arranged as to fuseV a metal wire 15 and to finally divide and project the same at high velocity upon the end of the pole 16. Oneform of apparat-us for car# rying out the process is shown and described in Patent 1,100,602. This apparatus can also be used in spraying onto the surface of the parts Zinc, brass, bronze, cadmium or other metals as may be desired.

In Fig. 5 I have shown both ends of the pole provided with a coating and theuse of the coat-ing 13 has already been explained,

andthe coating 17 forms an improved sur? face for the attachment of the current collector thereto as current must pass from the collector to the pole and from the pole to the trolley base.

It will be recognized that my improvement may be applied to various 'parts of a trolley base. in varying degrees and in the form of various metals, and therefore Iwish to be limited only by my claims.

I claim Y 1. A trolley device comprising a stationary base member, a rotatable turret thereon,

.a pivotally mounted arm on the turret,

springs biased to move the arm about its pivot, a trolley pole secured to the arm',

ferrous metal on the arm and securing means and contacting with the pole.

3. A trolley device comprising a stationary base member,a rotatable turret thereon, a pivotally mounted arm on the turret, springs biasedto move the arm about its pivot, a trolley pole secured to the arm, means to secure the pole to the arm and a coating of non-ferrous metal on the arm. a

4:. A trolley device comprising a stationary base member, a rotatable'turret thereon, a pivotallymounted arm on the turret, springs biased to move the arm about its pivot, a trolley poleV secured to the arm, means to secure the pole to the'arm and a coating of non-ferrous metal on the pole and contacting with the arm.

5. A trolley base and a trolley pole of ferrous metal secured together and a coating of copper interposed between the pole and base and secured to one of the said parts.

6. A trolley base having a ferrous arm pivotally mounted to move in a vertical plane and adapted to receive a trolley pole and a sprayed coating of non-ferrous metal on the arm positioned to contact with the pole.

7 A trolley base having a ferrous arm and adapted to receive a trolley pole and an adhering sprayed coating of substantially non corroding metal on the arm positioned t0 contact with the pole.

8.` A trolley base and a` trolley pole of ferrous metal secured together and a sprayed coating of copper base metal interposed between the pole and base and secured to one of the parts.

9. A trolley base and trolley pole both of ferrous metal and sprayed metallic coatings of non-ferrous metal secured to the base and to the pole and contacting with each other.

10. A trolley base and trolley pole both of ferrous metal and electrically conducting metallic coatings of non-ferrous metal secured to the base and'to the pole and contacting` With each other. j

11. A clamp'mem'ber for a trolley pole comprismg -a ferrous body member having a grooved portion and an adhering coating of copper alloy metal liningV the groove toinp Vcrease the conductivity between the clamp and pole.

12. A clamp member comprising a ferrous body member having a grooved portion and a sprayed coating of non-ferrous metal adhering to fthe body member.

.13. A trolley pole of ferrous metal having the outer surface for a. distance back from one end provided with a layer of deposited non-ferrous metal in direct and adhering contact with the said surface to form a conducting coating.

V14. A tubular trolley pole of ferrous metal having one of its surfaces for a distance back from one end providedl with a conducting, metallic layer of non-ferrous metal comprisiso ing a plurality of particles ofthe non-ferrous metal contacting with and adhering directly to the said surface to form a' conducting coat- 111g.

15. A trolley pole of ferrous metal having an adhering coating at one end of sprayed non-ferrous metal.

16. A trolley pole of ferrous metal having an adhering coating of copper adapted to Contact With parts secured thereto.

In testimony whereof I aiiX my signature.

EDGAR D. MOORE. 

